AMC has just canceled Rubicon, pulling the plug on the conspiracy-minded political thriller after only one season. Although Rubicon eventually found a loyal group of fans after an incredibly slow build—and the network praised its “rich and compelling story” in a statement—it failed to land a wide audience, even by basic cable standards (perhaps because it took forever to get anywhere). It’s sort of a bittersweet decision, considering its cancellation ensures it will only grow in cult stature, and all but secures its place on those lists of “too smart for TV” programs that are always kicked around, to be discovered and mourned anew by future generations.